EP 3512996 B1 20210728 - METHOD OF TRANSFORMING HIGH CONSISTENCY PULP FIBERS INTO PRE-DISPERSED SEMI-DRY AND DRY FIBROUS MATERIALS
Title (en)
METHOD OF TRANSFORMING HIGH CONSISTENCY PULP FIBERS INTO PRE-DISPERSED SEMI-DRY AND DRY FIBROUS MATERIALS
Title (de)
VERFAHREN ZUR UMWANDLUNG VON HOCHKONSISTENTEN ZELLSTOFFFASERN IN VORDISPERGIERTE HALBTROCKENE UND TROCKENE FASERMATERIALIEN
Title (fr)
PROCÉDÉ DE TRANSFORMATION DE FIBRES DE PÂTE À HAUTE CONSISTANCE EN MATÉRIAUX FIBREUX SEMI-SECS ET SECS PRÉ-DISPERSÉS
Publication
Application
Priority
- US 201662394456 P 20160914
- CA 2017051079 W 20170914
Abstract (en)
[origin: WO2018049522A1] The present invention is directed to a method of transforming a pulp fibrous into a pre-dispersed semi-dry or dry fibrous material and to the material produced. The method opens, de-entangles and fibrillates the fibrous material of the input pulp. The method mixes the input fibrous with chemicals while evaporating moisture in an updated mechanical disc refiner process. The refiner operates to set three process variables: 1) applied refining specific energy; 2) refiner gap opening and 3) refiner output consistency. Depending on the feed pulp type and consistency, the refiner's output is a pre-dispersed semi-dry fibrous material of 30 to 99% solids with 70 to 100% of separated fibers that depending on chemical treatment are loosely entangled fibrous that disperse in water using common techniques. The pre-dispersed semi-dry output may be further processed inline or by batch process air agitation at velocities sufficient to further separate fibers and loosen fibrous entanglements.
IPC 8 full level
D21C 9/00 (2006.01); D21C 3/00 (2006.01); D21D 1/20 (2006.01); D21D 1/30 (2006.01); D21H 27/00 (2006.01)
CPC (source: EP US)
D21C 3/003 (2013.01 - US); D21C 3/12 (2013.01 - US); D21C 3/24 (2013.01 - US); D21D 1/004 (2013.01 - US); D21D 1/006 (2013.01 - US); D21D 1/20 (2013.01 - EP); D21D 1/30 (2013.01 - EP US); D21H 27/002 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018049522 A1 20180322; BR 112019004638 A2 20190618; BR 112019004638 B1 20221122; CA 3036697 A1 20180322; CA 3036697 C 20200324; CN 109790681 A 20190521; CN 109790681 B 20220128; EP 3512996 A1 20190724; EP 3512996 A4 20200520; EP 3512996 B1 20210728; JP 2019526720 A 20190919; JP 7066684 B2 20220513; US 11834785 B2 20231205; US 2021285156 A1 20210916
DOCDB simple family (application)
CA 2017051079 W 20170914; BR 112019004638 A 20170914; CA 3036697 A 20170914; CN 201780056523 A 20170914; EP 17849963 A 20170914; JP 2019513947 A 20170914; US 201716332386 A 20170914